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You searched for: Publication Year 2001 Remove constraint Publication Year: 2001 Subject crop management Remove constraint Subject: crop management
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1. Allelopathy in agroecosystems in Spain

Author:
Gonzalez, L.; Reigosa, M.J.
Source:
Journal of crop production 2001 v.4 no.2 pp. 415-432
ISSN:
1092-678X
Subject:
plant development; weed control; soil solution; allelochemicals; developmental stages; phenology; root exudates; allelopathy; crop management; ecosystems; agriculture; plant ecology; Spain
DOI:
10.1300/J144v04n02_20

2. Alternative agriculture in Cuba

Author:
Oppenheim, S.
Source:
American entomologist 2001 v.47 no.4 pp. 216-227
ISSN:
1046-2821
Subject:
alternative farming; crop management; soil management; weed control; insect control; biological control agents; history; Cuba
DOI:
10.1093/ae/47.4.216

3. Canadian greenhouse gas mitigation options in agriculture

Author:
Desjardins, R.L.; Kulshreshtha, S.N.; Junkins, B.; Smith, W.; Grant, B.; Boehm, M.
Source:
Nutrient cycling in agroecosystems 2001 v.60 no.1/3 pp. 317-326
ISSN:
1385-1314
Subject:
animal manures; agriculture; carbon dioxide; methane; nitrous oxide; fermentation; digestion; farm management; soil; crop management; livestock; feeds; feed rations; prediction; simulation models; economic impact; emissions; socioeconomics; Canada
Abstract:
... In 1991, on farm management practices contributed 57.6 Tg CO2 equivalent in greenhouse gas emissions, that is, about 10% of the anthropogenic GHG emissions in Canada. Approximately 11% of these emissions were in the form of CO2, 36% in the form of CH4 and 53% in the form of N2O. The CO2 emissions were from soils; CH4 emissions were from enteric fermentation and manure, and N2O emissions were prima ...

4. Changes in weed community composition as influenced by cover crop and management system in continuous corn

Author:
Bààrberi Paolo; Mazzoncini Marco
Source:
Weed science 2001 v.49 no.4 pp. 491-499
ISSN:
0043-1745
Subject:
Amaranthus retroflexus; Chenopodium album; Secale cereale; Solanum nigrum; Trifolium incarnatum; Trifolium subterraneum; Zea mays; biomass; community structure; corn; cover crops; crop management; developmental stages; dicamba; glyphosate; leaves; nicosulfuron; no-tillage; planting; plowing; rye; stubble; terbuthylazine; weeds
Abstract:
... Weed suppression by cover crops grown during the winter fallow period in continuous corn may lead to a reduction in herbicide use. Rye, crimson clover, and subterranean clover cover crops were compared with corn stubble under a conventional management system (CS) that included plowing and use of preemergence residual herbicides and a low-input management system (LIS) that included no-tillage and u ...
DOI:
10.1614/0043-1745(2001)049[0491:CIWCCA]2.0.CO;2

5. Cichorium intybus L--cultivation, processing, utility, value addition and biotechnology, with an emphasis on current status and future prospects

Author:
Bais, H.P.; Ravishankar, G.A.
Source:
Journal of the science of food and agriculture 2001 v.81 no.5 pp. 467-484
ISSN:
0022-5142
Subject:
Cichorium intybus; crop production; plant cultural practices; crop management; food processing; coffee (beverage); mixtures; tissue culture; transgenic plants; cell culture; bioreactors; medicinal properties; chemical constituents of plants; explants
Abstract:
... Cultivation of chicory plants for various applications, such as utilisation of the root biomass for preparation of a coffee adjuvant, utilisation as a vegetable and, recently, utility of the plants for important phytochemicals, has received global attention. Chicory is widely grown in countries of different geographical locations owing to the economic importance of this crop. This review addresses ...
DOI:
10.1002/jsfa.817

6. Effect of crop-specific field management and N fertilization on N2O emissions from a fine-loamy soil

Author:
Ruser, R.; Flessa, H.; Schilling, R.; Besse, F.; Munch, J.C.
Source:
Nutrient cycling in agroecosystems 2001 v.59 no.2 pp. 177-191
ISSN:
1385-1314
Subject:
Solanum tuberosum; Triticum aestivum; Zea mays; Lolium perenne; Festuca rubra; crop management; nitrous oxide; nitrogen; nitrates; freeze-thaw cycles; air temperature; emissions; application rate
Abstract:
... Agricultural soils are a major source of atmospheric N2O. This study was conducted to determine the effect of different crop-specific field management and N fertilization rates on N2O emissions from a fine-loamy Dystric Eutrochrept. Fluxes of N2O were measured for two years at least once a week on plots cropped with potatoes (Solanum tuberosum) fertilized with 50 or 150 kg N ha(-1) a(-1), winterwh ...

7. Effect of post-harvest management on seed production of creeping red fescue, tall fescue, and Kentucky bluegrass in the Peace River region of north-western Canada

Author:
Fairey, N.A.; Lefkovitch, L.P.
Source:
Canadian journal of plant science 2001 v.81 no.4 pp. 693-701
ISSN:
0008-4220
Subject:
tillage; Festuca rubra; Festuca arundinacea; Poa pratensis; crop yield; crop quality; crop management; postharvest treatment; pruning; burning; diuron; Canada
DOI:
10.4141/P00-129

8. Effect of seed piece removal on yield and agronomic characteristics of Russet Burbank potatoes

Author:
Bohl, W.H.; Love, S.L.; Thompson, A.L.
Source:
American journal of potato research 2001 v.78 no.6 pp. 397-402
ISSN:
1099-209X
Subject:
chemical composition; root systems; reducing sugars; sucrose; Solanum tuberosum; height; agronomic traits; crop yield; tubers; field experimentation; crop management; Idaho
DOI:
10.1007/BF02896370

9. Effects of agronomic practices on the soil carbon storage potential in arable farming in Austria

Author:
Dersch, G.; Bohm, K.
Source:
Nutrient cycling in agroecosystems 2001 v.60 no.1/3 pp. 49-55
ISSN:
1385-1314
Subject:
carbon dioxide; potassium fertilizers; no-tillage; animal manures; soil organic matter; farming systems; phosphorus fertilizers; soil depth; climate change; carbon; potassium; crop management; application rate; nitrogen fertilizers; Austria
Abstract:
... According to the Kyoto-Protocol for carbon dioxide mitigation the direct human induced sequestration potential of carbon in agricultural soils may in the future be included for calculating net changes in greenhouse gas emissions. Therefore we used long-term experiments on arable land in Austria differing strongly in climate and soil conditions to explore the effects of agronomic practices on chang ...

10. Effects of different field management systems on the carabid coenosis in oil seed rape with special respect to ecology and nutritional status of predacious Poecilus cupreus L. (Col., Carabidae)

Author:
Langmaack, M.; Land, S.; Buchs, W.
Source:
Journal of applied entomology 2001 v.125 no.6 pp. 313-320
ISSN:
0931-2048
Subject:
Pterostichus cupreus; biocenosis; nutritional status; insecticides; application rate; body weight; fecundity; phenology; predators; species diversity; population density; Brassica napus; body length; crop management; nitrogen fertilizers; Germany
DOI:
10.1046/j.1439-0418.2001.00531.x

11. Evaluation of AnnAGNPS on Mississippi Delta MSEA watersheds

Author:
Yuan, Y.; Bingner, R.L.; Rebich, R.A.
Source:
Transactions of the ASAE 2001 v.44 no.5 pp. 1183-1190
ISSN:
0001-2351
Subject:
watersheds; crop production; crop management; cover crops; winter; pollution control; water pollution; erosion control; water erosion; sediment yield; simulation models; agricultural land; losses from soil; runoff; prediction; best management practices; nonpoint source pollution; Mississippi
Abstract:
... Sediment and its associated pollutants entering a water body can be very destructive to the health of that system. Best Management Practices (BMPs) can be used to reduce these pollutants, but understanding the most effective practices is very difficult. Watershed models are the most cost-effective tools to aid in the decision-making process of selecting the BMP that is most effective in reducing t ...
Handle:
10113/26652

12. Evidence for lunar-sidereal rhythms in crop yield: a review

Author:
Kollerstrom, N.; Staudenmaier, G.
Source:
Biological agriculture & horticulture 2001 v.19 no.3 pp. 247-259
ISSN:
0144-8765
Subject:
planting date; crop yield; seasonal variation; crop management; crops
Abstract:
... In 1956, Thun developed a procedure of sowing according to the position of the Moon in front of the twelve zodiacal constellations. These constellations were classified into four groups according to the element (Earth, Water, Air and Fire) astrologically associated with them. Root, leaf, flower and fruit crops were found to show increased yields if sown when the Moon stood before Earth, Water, Air ...
DOI:
10.1080/01448765.2001.9754928

13. Forages underseeded in barley for residue management for potatoes

Author:
Holmstrom, D.A.; Kunelius, H.T.; Ivany, J.A.
Source:
Canadian journal of plant science 2001 v.81 no.1 pp. 205-210
ISSN:
0008-4220
Subject:
Hordeum vulgare; Solanum tuberosum; crop residues; crop management; forage; crop yield; roots; biomass; soil organic matter; soil texture; Lolium multiflorum; Trifolium alexandrinum; Trifolium pratense; glyphosate; Phleum pratense; chiseling; Prince Edward Island
DOI:
10.4141/P00-001

14. Genetic progress from 40 years of orchardgrass breeding in North America measured under management-intensive rotational grazing

Author:
Casler, M.D.; Fales, S.L.; Undersander, D.J.; McElroy, A.R.
Source:
Canadian journal of plant science 2001 v.81 no.4 pp. 713-721
ISSN:
0008-4220
Subject:
variety trials; germplasm; range management; cultivars; genetic improvement; Dactylis glomerata; crop yield; grazing intensity; genetic variation; crop management; Pennsylvania; Canada; Netherlands; Switzerland; Denmark; Wisconsin; Wales
DOI:
10.4141/P01-032

15. Genetic progress in soybean of the U.S. midsouth

Author:
Ustun, A.; Allen, F.L.; English, B.C.
Source:
Crop science 2001 v.41 no.4 pp. 993-998
ISSN:
0011-183X
Subject:
germplasm; cultivars; plant breeding; Glycine max; lodging; protein content; genetic improvement; plant characteristics; height; crop yield; agricultural programs and projects; field experimentation; crop management; Tennessee
Abstract:
... Yield increase in crops has occurred due to plant breeding and improved production and management techniques. The amount of increase due to plant breeding in soybean in the southern USA has not been determined. The objective of this study was to evaluate the genetic improvements in soybean yield and other important agronomic traits. 'CNS' and 'S-100' were chosen as representative ancestral lines f ...

16. Grass and Legume Cover Crop Effects on Dry Matter and Nitrogen Accumulation

Author:
Jude J.O. Odhiambo; Arthur A. Bomke
Source:
Agronomy journal 2001 v.93 no.2 pp. 299-307
ISSN:
0002-1962
Subject:
Humaquepts; Lolium multiflorum; Secale cereale; Trifolium incarnatum; Triticum aestivum; Vicia villosa; agronomy; biomass; cover crops; crop management; dry matter accumulation; grasses; legumes; nitrogen; nitrogen content; planting date; river deltas; rye; spring; wheat
Abstract:
... Careful cover crop management during the spring growth period may allow farmers to maximize dry matter (DM) yield and N accumulation for the subsequent crop. A 2-yr study was conducted to determine the effect of grass and legume cover crops on spring DM production and N accumulation. Each year, cover crops were planted in late August and late September on a loamy, mixed, mesic Humaquept in the Fra ...
DOI:
10.2134/agronj2001.932299x

17. IPM, what has it delivered?

Author:
Harris, M.K.
Source:
Plant disease 2001 v.85 no.2 pp. 112-121
ISSN:
0191-2917
Subject:
history; insecticides; application rate; coevolution; Gossypium hirsutum; costs and returns; phenology; crop yield; integrated pest management; natural enemies; crop management; pest resistance; Texas
DOI:
10.1094/PDIS.2001.85.2.112

18. Improved water control and crop management effects on lowland rice productivity in West Africa

Author:
Becker, M.; Johnson, D.E.
Source:
Nutrient cycling in agroecosystems 2001 v.59 no.2 pp. 119-127
ISSN:
1385-1314
Subject:
Oryza sativa; crop management; swamps; intensive farming; crop yield; bunds; water management; land management; weeds; nitrogen; nutrient availability; application rate; application timing; biomass production; Cote d'Ivoire
Abstract:
... Much of the rapidly-growing demand for rice in West Africa will be met from production in inland valley swamps which are abundant and relatively robust with regard to cropping intensification. Rice yields in the traditional, predominating non-bunded systems are low (about 1.5 Mg ha(-1)). Informal development of traditional rainfed lowlands is currently occurring across the region, mainly with low- ...

19. Improving nutrient use efficiency of annual crops in Brazilian acid soils for sustainable crop production

Author:
Fageria, N.K.; Baligar, V.C.
Source:
Communications in soil science and plant analysis 2001 v.32 no.7/8 pp. 1303-1319
ISSN:
0010-3624
Subject:
Zea mays; Glycine max; liming; fertilizer requirements; tropical soils; acid soils; Oryza sativa; fertilizers; Oxisols; Phaseolus vulgaris; crop management; trace elements; nutrients; application rate; Brazil
Abstract:
... In tropical acid soils, acidity is an important constraint for availability and uptake of nutrients by annual crops, and this leads to lower crop yields. Factors that contribute to low nutrient uptake efficiencies in these soils are low natural levels of most essential plant nutrients and unfavorable soil and plant environments. High P fixation capacity, Al, Mn and H toxicity, low activities of be ...
Handle:
10113/42194
DOI:
10.1081/CSS-100104114

20. Improving the nutritive value of timothy through management and breeding

Author:
Belanger, G.; Michaud, R.; Jefferson, P.G.; Tremblay, G.F.; Bregard, A.
Source:
Canadian journal of plant science 2001 v.81 no.4 pp. 577-585
ISSN:
0008-4220
Subject:
cultivars; plant breeding; nitrogen content; stems; chemical constituents of plants; genetic improvement; genetic variation; Phleum pratense; nutritive value; crop yield; digestibility; crop management; leaves
DOI:
10.4141/P00-143

21. Increasing Water Use and Water Use Efficiency in Dryland Wheat

Author:
J.F. Angus; A.F. van Herwaarden
Source:
Agronomy journal 2001 v.93 no.2 pp. 290-298
ISSN:
0002-1962
Subject:
Triticum aestivum; agronomy; arid lands; carbohydrates; crop management; grain yield; nitrogen fertilizers; soil water; transpiration; vapor pressure deficit; water potential; water supply; water use efficiency; wheat; Australia
Abstract:
... Water use efficiency (WUE), the ratio of grain yield to crop water use, provides a simple means of assessing whether yield is limited by water supply or other factors. Based on this assessment, yields of commercial dryland wheat (Triticum aestivum L.) crops in southeastern Australia are usually not limited by water. Transpiration efficiency (TE), the ratio of yield to transpiration, is relatively ...
DOI:
10.2134/agronj2001.932290x

22. Infiltration into freezing and thawing soils under differing field treatments

Author:
Xiuqing, Z.; Flerchinger, G.N.
Source:
Journal of irrigation and drainage engineering 2001 v.127 no.3 pp. 176-182
ISSN:
0733-9437
Subject:
frost; soil depth; freezing; thawing; freeze-thaw cycles; winter; spring; deep tillage; stubble; winter wheat; Triticum aestivum; crop management; soil water content; climatic soil types; frozen soils; China
DOI:
10.1061/(ASCE)0733-9437(2001)127:3(176)

23. Influence of source, timing and placement of nitrogen on grain yield and nitrogen removal of durum wheat under reduced- and conventional-tillage management

Author:
Grant, C.A.; Brown, K.R.; Racz, G.J.; Bailey, L.D.
Source:
Canadian journal of plant science 2001 v.81 no.1 pp. 17-27
ISSN:
0008-4220
Subject:
application timing; nitrogen content; nitrogen; nutrient availability; clay loam soils; crop yield; direct seeding; Triticum turgidum subsp. durum; urea; seed productivity; field experimentation; conservation tillage; crop management; sandy loam soils; Manitoba
DOI:
10.4141/P00-091

24. Innovative management of agricultural phosphorus to protect soil and water resources

Author:
Sharpley, A.N.; Kleinman, P.; McDowell, R.
Source:
Communications in soil science and plant analysis 2001 v.32 no.7/8 pp. 1071-1100
ISSN:
0010-3624
Subject:
phosphorus; phosphorus fertilizers; nitrogen; nitrogen fertilizers; animal manures; losses from soil; pollution control; leaching; runoff; crop management; application methods; soil fertility; application rate; best management practices
Abstract:
... Agriculture, particularly livestock agriculture, is receiving increasing public scrutiny due to non-point source phosphorus (P) pollution and eutrophication. Much of today's situation may be attributed to system level trends in specialization and intensification that result in excess P entering livestock farms. Balancing P at the farm gate represents a necessary step for long-term soil and water q ...
Handle:
10113/18608

25. Management Practice Effects on Phosphorus Losses in Runoff in Corn Production Systems

Author:
L. G. Bundy; T. W. Andraski; J. M. Powell
Source:
Journal of environmental quality 2001 v.30 no.5 pp. 1822-1828
ISSN:
1537-2537
Subject:
phosphorus; losses from soil; runoff; Zea mays; crop production; crop management
Abstract:
... Phosphorus losses in runoff from cropland can contribute to nonpoint-source pollution of surface waters. Management practices in corn (Zea mays L.) production systems may influence P losses. Field experiments with treatments including differing soil test P levels, tillage and manure application combinations, and manure and biosolids application histories were used to assess these management practi ...
Handle:
10113/13993
DOI:
10.2134/jeq2001.3051822x
PubMed:
11577891

26. Management of nitrogen and phosphorus rates does not suppress Verticillium wilt in Yukon Gold

Author:
Platt, H.W.; Arsenault, W.J.
Source:
American journal of potato research 2001 v.78 no.3 pp. 215-219
ISSN:
1099-209X
Subject:
Solanum tuberosum; Verticillium dahliae; Verticillium albo-atrum; nitrogen; phosphorus; crop management; nutrient availability; crop yield; field experimentation; leaves; diammonium phosphate; potassium chloride; application rate; ammonium nitrate; Prince Edward Island
DOI:
10.1007/BF02883547

27. Management strategies during the establishment year enhance production and fitness of seeded bermudagrass stolons

Author:
Munshaw, G.C.; Williams, D.W.; Cornelius, P.L.
Source:
Crop science 2001 v.41 no.5 pp. 1558-1564
ISSN:
0011-183X
Subject:
cultivars; diameter; seeds; Cynodon dactylon; nitrogen; stolons; urea; biomass production; crop management; application rate; mortality; Kentucky
Abstract:
... Bermudagrass [Cynodon dactylon (L.) Pers.] is an important turf-grass across the transition zone. A common concern is survival of seeded cultivars the first winter after establishment. The objective of this study was to determine the optimum seeding and N rates to enhance stolon production. The cultivar Mirage was seeded in June of 1998 and 1999 at 12.2, 24.4, 36.6, and 48.8 kg pure live seed (PLS ...

28. Nitrous oxide emissions from an irrigated soil as affected by fertilizer and straw management

Author:
Hao, X.; Chang, C.; Carefoot, J.M.; Janzen, H.H.; Ellert, B.H.
Source:
Nutrient cycling in agroecosystems 2001 v.60 no.1/3 pp. 1-8
ISSN:
1385-1314
Subject:
Triticum aestivum; nitrous oxide; irrigated soils; crop residues; crop management; fertilizers; tillage; nitrogen; application timing; ammonium nitrate; Alberta
Abstract:
... Nitrous oxide (N2O) emission from farmland is a concern for both environmental quality and agricultural productivity. Field experiments were conducted in 1996-1997 to assess soil N2O emissions as affected by timing of N fertilizer application and straw/tillage practices for crop production under irrigation in southern Alberta. The crops were soft wheat (Triticum aestivum L.) in 1996 and canola (Br ...

29. Nutrient use efficiency in plants

Author:
Baligar, V.C.; Fageria, N.K.; He, Z.L.
Source:
Communications in soil science and plant analysis 2001 v.32 no.7/8 pp. 921-950
ISSN:
0010-3624
Subject:
cultivars; nutrient transport; plant nutrition; nutrition-genotype interaction; application methods; fertilizers; nutrient uptake; best management practices; crop management; application rate
Abstract:
... Invariably, many agricultural soils of the world are deficient in one or more of the essential nutrients needed to support healthy plants. Acidity, alkalinity, salinity, anthropogenic processes, nature of farming, and erosion can lead to soil degradation. Additions of fertilizers and/or amendments are essential for a proper nutrient supply and maximum yields. Estimates of overall efficiency of app ...
Handle:
10113/42198
DOI:
10.1081/CSS-100104098

30. Ornamental shrubs: effects of stockplant management on the rooting and establishment of cuttings

Author:
Cameron, R.W.F.; Harrison-Murray, R.S.; Ford, Y.Y.; Judd, H.
Source:
Journal of horticultural science & biotechnology 2001 v.76 no.4 pp. 489-496
ISSN:
1462-0316
Subject:
interspecific variation; overwintering; buds; shrubs; winter; vigor; vegetative propagation; rooting; plant cuttings; pruning; ornamental woody plants; crop management; mortality; shoots

31. Penman Monteith crop coefficients for use with desert turf systems

Author:
Brown, P.W.; Mancino, C.F.; Young, M.H.; Thompson, T.L.; Wierenga, P.J.; Kopec, D.M.
Source:
Crop science 2001 v.41 no.4 pp. 1197-1206
ISSN:
0011-183X
Subject:
mathematical models; evapotranspiration; solar radiation; sowing date; Cynodon transvaalensis; Cynodon dactylon; irrigation requirement; Lolium perenne; leaf area index; seasonal variation; crop management; Lolium multiflorum; Arizona
Abstract:
... Irrigation scheduling systems which estimate actual evapotranspiration (ETa) by adjusting reference evapotranspiration (ETo) with crop coefficients (K(c)s) have been suggested as a means of improving irrigation management of turfgrass in the desert southwest. The objective of this study was to develop turfgrass K(c)s for use with ETo computed by the Penman Monteith Equation recommended by the Unit ...

32. Polymorphisms of phosphate acquisition parameters in barley (Hordeum vulgare) landraces: secreted acid phosphatase and milieu acidification of roots after germination in vitro

Author:
Ahokas, H.; Manninen, M.L.
Source:
Biological agriculture & horticulture 2001 v.18 no.4 pp. 385-399
ISSN:
0144-8765
Subject:
seed germination; cultivars; acidification; acid phosphatase; landraces; Hordeum vulgare; nutrient uptake; microhabitats; crop management; genotype mixtures; seasonal variation; phosphates; genotype; protein secretion; enzyme activity; roots
Abstract:
... Significant differences are shown both for acid phosphatase activities and acidification of phosphorus-deficient germination media, in which 39 genotypes of barley, comprising 34 Finnish landrace and five 'global' lines, were grown axenically for 7 days. The differences between barleys had statistical significances varying from p = 0.072 to 3 x 10(-14). Mean acid phosphatase activities varied from ...
DOI:
10.1080/01448765.2001.9754899

33. Review: natural enemies and biocontrol of pests of strawberry in northern and central Europe

Author:
Cross, J.V.; Easterbrook, M.A.; Crook, A.M.; Crook, D.; Fitzgerald, J.D.; Innocenzi, P.J.; Jay, C.N.; Solomon, M.G.
Source:
Biocontrol science and technology 2001 v.11 no.2 pp. 165-216
ISSN:
0958-3157
Subject:
host range; parasitoids; soil sterilization; Gastropoda; Fragaria ananassa; economics; arthropods; biological control agents; host plants; plant parasitic nematodes; plant pests; predators; polyethylene film; natural enemies; crop management; biological control; Europe
DOI:
10.1080/09583150120035639

34. Soil sampling techniques for determining the effect of cultural practices on Rhizoctonia oryzae-sativae inoculum in rice field soils

Author:
Miller, T.C.; Webster, R.K.
Source:
Plant disease 2001 v.85 no.9 pp. 967-972
ISSN:
0191-2917
Subject:
sampling; quantitative analysis; Oryza sativa; sclerotia; inoculum density; fungal diseases of plants; Ceratobasidium oryzae-sativae; paddy soils; rice straw; crop management
Abstract:
... Methods were evaluated to quantify sclerotia in rice fields affected with aggregate sheath spot disease. Recovered sclerotia were compared with disease ratings at harvest for paddies subjected to various postharvest cultural straw management practices. Sclerotial inoculum level was not always correlated with subsequent disease incidence in rice aggregate sheath spot disease, suggesting alternative ...
DOI:
10.1094/PDIS.2001.85.9.967

35. Soil-Sampling Issues for Precision Management of Crop Production

Author:
Rains, G.C.; Thomas, D.L.; Vellidis, G.
Source:
Applied engineering in agriculture 2001 v.17 no.6 pp. 769-775
ISSN:
0883-8542
Subject:
application rate; center pivot irrigation; cotton; crop management; crop yield; farms; fertilizers; pH; potassium; precision agriculture; soil depth; soil properties; soil sampling
Abstract:
... A study to examine soil-sampling issues for adequate representation of soil property variation in precision agriculture was conducted on a 26-ha farm growing cotton under a center-pivot irrigation system. Proper sampling depth, appropriate representation of field variability and laboratory-to-laboratory variances were examined. Sampling depth significantly affected soil sample test results of phos ...

36. Solvent retention capacities of irrigated soft white spring wheat flours

Author:
Guttieri, M.J.; Bowen, D.; Gannon, D.; O'Brien, K.; Souza, E.
Source:
Crop science 2001 v.41 no.4 pp. 1054-1061
ISSN:
0011-183X
Subject:
wheat flour; irrigation; gluten; starch; baking quality; milling quality; Triticum aestivum; solvents; food composition; pentosans; water holding capacity; crop management; Idaho
Abstract:
... The solvent retention capacity (SRC) test uses the ability of flour to retain a range of solvents as a means of evaluating multiple aspects of wheat (Triticum aestivum L.) quality: pentosan content, starch damage, gluten strength, and general water retention. To assess the utility of the SRC in cultivar evaluation, 26 soft white spring wheat genotypes were produced in seven irrigated environments, ...

37. Spatial and temporal dynamics of methane emissions from agricultural sources in China

Author:
Verburg, P.H.; Gon, H.A.C.D. van der.
Source:
Global change biology 2001 v.7 no.1 pp. 31-47
ISSN:
1354-1013
Subject:
animal manures; agriculture; methane; spatial variation; temporal variation; land use; livestock; crop management; history; simulation models; Oryza sativa; fermentation; paddy soils; emissions; rice; flooded conditions; China
DOI:
10.1046/j.1365-2486.2001.00389.x

38. Stubble Management Effects on Three Creeping Red Fescue Cultivars Grown for Seed Production

Author:
Paul D. Meints; Thomas G. Chastain; William C. Young; Gary M. Banowetz; Carol J. Garbacik
Source:
Agronomy journal 2001 v.93 no.6 pp. 1276-1281
ISSN:
0002-1962
Subject:
cultivars; stubble; Festuca rubra; rhizomes; height; regrowth; seed productivity; field experimentation; prescribed burning; tillers; crop management; seed set; Oregon
Abstract:
... Nonthermal management to mechanically remove residue in creeping red fescue (Festuca rubra L.) seed crops has been associated with yield loss when compared with field burning. This 2-yr field study was conducted to investigate the underlying causes for reduced seed yield potential under mechanical residue removal management compared with traditional burning. The effects of two stubble heights, 2.5 ...
Handle:
10113/42750
DOI:
10.2134/agronj2001.1276

39. Studies on the cultivation and uses of evening primrose (Oenothera spp.) in China

Author:
Deng, Y.C.; Hua, H.M.; Li, J.; Lapinskas, P.
Source:
Economic botany 2001 v.55 no.1 pp. 83-92
ISSN:
0013-0001
Subject:
interspecific variation; foods; feeds; linolenic acid; seeds; wild plants; seed oils; technology transfer; seed productivity; Oenothera biennis; medicinal properties; crop management; domestication; herbal medicines; crops; China
Abstract:
... Evening primrose originated in North America and became naturalized in the north-east of China about one hundred years ago, where it has been used as famine food and animal feed. New uses for the seed oil, which contains γ-linolenic acid (GLA), that have been developed in China and overseas since 1980 have created a much larger commercial demand for the seed. There are eight species of Oenothera L ...
DOI:
10.1007/BF02864548

40. Tillage, Cover Crop, and Kill-Planting Date Effects on Corn Yield and Soil Nitrogen

Author:
Upendra M. Sainju; Bharat P. Singh
Source:
Agronomy journal 2001 v.93 no.4 pp. 878-886
ISSN:
0002-1962
Subject:
Paleudults; Vicia villosa; Zea mays; agronomy; corn; cover crops; crop management; nitrogen; nitrogen content; sandy loam soils; silage; spring; Georgia
Abstract:
... Tillage and spring kill date may affect cover crop N accumulation and subsequent N release to the soil, thereby influencing corn (Zea mays L.) N uptake and yield. We examined the influence of three tillage practices [no till (NT), chisel plowing (CP), and moldboard plowing (MP)], two cover crop management systems [hairy vetch (Vicia villosa Roth) vs. winter weeds], and two cover crop kill–corn pla ...
DOI:
10.2134/agronj2001.934878x

41. Weed allelopathy, its ecological impacts and future prospects: a review

Author:
Qasem, J.R.; Foy, C.L.
Source:
Journal of crop production 2001 v.4 no.2 pp. 43-119
ISSN:
1092-678X
Subject:
phytotoxicity; allelochemicals; plant growth substances; allelopathy; pest control; weeds; ecosystems; crop-weed competition; agriculture; crop management; parasitic plants; crops
DOI:
10.1300/J144v04n02_02

42. Weed seed return as influenced by the critical weed-free period and row spacing of no-till glyphosate-resistant soybean

Author:
Chandler, K.; Shrestha, A.; Swanton, C.J.
Source:
Canadian journal of plant science 2001 v.81 no.4 pp. 877-880
ISSN:
0008-4220
Subject:
Glycine max; crop management; crop yield; seed dispersal; row spacing; no-tillage; weed control; glyphosate; herbicide resistance; Ontario
DOI:
10.4141/P01-049

43. Yield and fruit quality of papaya cultivars grown at two locations in Puerto Rico

Author:
Goenaga, R.; Irizarry, H.; Rivera-Amador, E.
Source:
Journal of agriculture of the University of Puerto Rico 2001 v.85 no.3/4 pp. 127-134
ISSN:
0041-994X
Subject:
Carica papaya; cultivars; crop yield; crop quality; geographical variation; open pollination; crop management; Oxisols; Ultisols; weight; Puerto Rico
Abstract:
... We evaluated five hybrids and an open-pollinated papaya cultivar grown on an Oxisol and Ultisol under intensive management at Isabela and Corozal, Puerto Rico. At Isabela, hybrid Tainung 3 produced a significantly greater number of marketable fruits, whereas at Corozal the three Tainung hybrids did not show significant differences for this trait. There were no significant differences in weight of ...
Handle:
10113/312

44. The effect of rejuvenation of Aspen Parkland ecoregion grass-legume pastures on botanical composition

Author:
Lardner, H.A.; Wright, S.B.M.; Cohen, R.D.H.; Curry, P.; MacFarlane, L.
Source:
Canadian journal of plant science 2001 v.81 no.4 pp. 673-683
ISSN:
0008-4220
Subject:
band placement; potassium fertilizers; Bromus inermis; pastures; mowing; botanical composition; plant communities; Medicago sativa; phosphorus fertilizers; sulfur fertilizers; burning; weeds; crop management; nitrogen fertilizers; Saskatchewan
DOI:
10.4141/P00-076

45. The effect of seeding rate and nitrogen fertilization on barley yield and yield components in a cool maritime climate

Author:
Spaner, D.; Todd, A.G.; McKenzie, D.B.
Source:
Journal of agronomy and crop science 2001 v.187 no.2 pp. 105-110
ISSN:
0931-2250
Subject:
lodging; application rate; Hordeum vulgare; nitrogen; yield components; coasts; top dressings; crop management; ammonium nitrate; climatic factors; Newfoundland and Labrador
DOI:
10.1046/j.1439-037X.2001.00507.x

46. The effects of founding events and agricultural practices on the genetic structure of three metapopulations of Globodera pallida

Author:
Folkertsma, R.T.; Koert, P. van.; Rouppe van der Voort, J.N.A.M.; Groot, K.E. de.; Kammenga, J.E.; Helder, J.; Bakker, J.
Source:
Phytopathology 2001 v.91 no.8 pp. 753-758
ISSN:
0031-949X
Subject:
Globodera pallida; plant parasitic nematodes; genetic techniques and protocols; alleles; loci; heterozygosity; genetic variation; crop production; crop management; Netherlands
Abstract:
... To assess the genetic constitution of the Globodera pallida populations in the Netherlands and the effects of agricultural practices, three geographically separated metapopulations, in total consisting of 226 local populations, were analyzed by two-dimensional gel electrophoresis (2-DGE) of total proteins. This technique allows the accurate assessment of allele frequencies in homogenates of mixtur ...
DOI:
10.1094/PHYTO.2001.91.8.753
PubMed:
18944032

47. The importance of early season phosphorus nutrition

Author:
Grant, C.A.; Flaten, D.N.; Tomasiewicz, D.J.; Sheppard, S.C.
Source:
Canadian journal of plant science 2001 v.81 no.2 pp. 211-224
ISSN:
0008-4220
Subject:
plant physiology; metabolism; rhizosphere; vesicular arbuscular mycorrhizae; plant nutrition; application rate; nutrient availability; nutrient deficiencies; nutrient uptake; seasonal variation; pH; crops; crop management; roots; prediction; phosphorus
DOI:
10.4141/P00-093